Add Energy Tracker integration v1.0.0

[StefaniOSApps]

Proposed change

This PR adds the Energy Tracker integration which allows users to automatically send meter readings from Home Assistant sensors to their Energy Tracker account at https://www.energy-tracker.best-ios-apps.de.

Energy Tracker is an established energy monitoring service with over 100,000 users. This integration enables automated meter reading submissions directly from Home Assistant entities with config flow support, multi-account capability, and full localization for 26 languages.

Type of change

• New integration (thank you!)

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue: N/A
• Link to documentation pull request: Add Energy Tracker integration documentation home-assistant.io#42031
• Link to developer documentation pull request: N/A
• Link to frontend pull request: N/A

Checklist

• I understand the code I am submitting and can explain how it works.
• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[Copilot]

Pull request overview

This PR adds a new Energy Tracker integration that allows users to send meter readings from Home Assistant sensors to their Energy Tracker cloud service account. The integration is a service-type integration with cloud_push IoT class, providing a send_meter_reading service with multi-account support through config flow setup.

Key changes include:

• Config flow with user setup and reconfiguration support
• Service-based integration without entities
• Comprehensive error handling with translated exceptions
• Full localization support for 26 languages
• Bronze-tier quality scale compliance

Reviewed changes

Copilot reviewed 41 out of 41 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
manifest.json	Defines integration metadata, dependencies, and type configuration
const.py	Declares domain constants and service names
config_flow.py	Implements user and reconfigure flows with token validation
api.py	Wraps Energy Tracker API client with HA exception translation
__init__.py	Handles integration setup, service registration, and meter reading logic
services.yaml	Defines service schema and field selectors
quality_scale.yaml	Documents quality scale compliance status
strings.json + translations	Provides user-facing strings in 26 languages
Test files	Comprehensive unit tests for all components